abci: modify Client interface and socket client (#5673)

`abci.Client`:

- Sync and Async methods now accept a context for cancellation
    * grpc client uses context to cancel both Sync and Async requests
    * local client ignores context parameter
    * socket client uses context to cancel Sync requests and to drop Async requests before sending them if context was cancelled prior to that

- Async methods return an error
    * socket client returns an error immediately if queue is full for Async requests
    * local client always returns nil error
    * grpc client returns an error if context was cancelled before we got response or the receiving queue had a space for response (do not confuse with the sending queue from the socket client)

- specify clients semantics in [doc.go](https://raw.githubusercontent.com/tendermint/tendermint/27112fffa62276bc016d56741f686f0f77931748/abci/client/doc.go)

`mempool.TxInfo`

- add optional `Context` to `TxInfo`, which can be used to cancel `CheckTx` request

Closes #5190

test/maverick/consensus/replay.go

@@ -2,6 +2,7 @@ package consensus
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"hash/crc32"
 	"io"
@@ -241,7 +242,7 @@ func (h *Handshaker) NBlocks() int {
 func (h *Handshaker) Handshake(proxyApp proxy.AppConns) error {
 
 	// Handshake is done via ABCI Info on the query conn.
-	res, err := proxyApp.Query().InfoSync(proxy.RequestInfo)
+	res, err := proxyApp.Query().InfoSync(context.Background(), proxy.RequestInfo)
 	if err != nil {
 		return fmt.Errorf("error calling Info: %v", err)
 	}
@@ -316,7 +317,7 @@ func (h *Handshaker) ReplayBlocks(
 			Validators:      nextVals,
 			AppStateBytes:   h.genDoc.AppState,
 		}
-		res, err := proxyApp.Consensus().InitChainSync(req)
+		res, err := proxyApp.Consensus().InitChainSync(context.Background(), req)
 		if err != nil {
 			return nil, err
 		}

test/maverick/node/node.go

@@ -482,7 +482,7 @@ func createTransport(
 			connFilters,
 			// ABCI query for address filtering.
 			func(_ p2p.ConnSet, c net.Conn, _ []net.IP) error {
-				res, err := proxyApp.Query().QuerySync(abci.RequestQuery{
+				res, err := proxyApp.Query().QuerySync(context.Background(), abci.RequestQuery{
 					Path: fmt.Sprintf("/p2p/filter/addr/%s", c.RemoteAddr().String()),
 				})
 				if err != nil {
@@ -500,7 +500,7 @@ func createTransport(
 			peerFilters,
 			// ABCI query for ID filtering.
 			func(_ p2p.IPeerSet, p p2p.Peer) error {
-				res, err := proxyApp.Query().QuerySync(abci.RequestQuery{
+				res, err := proxyApp.Query().QuerySync(context.Background(), abci.RequestQuery{
 					Path: fmt.Sprintf("/p2p/filter/id/%s", p.ID()),
 				})
 				if err != nil {